When using the three speed method to analyze and study the danger, only if there is dynamic phenomenon in the process, such as jet hole, bit stuck and so on, can we judge whether it exceeds the standard In the process of implementing preventive measures, if there is no dynamic phenomenon, the three factor analysis method cannot be used to analyze the sensitivity of indicators At the same time, when the index exceeds the standard, it is impossible to test the excellent prediction accuracy of the index on the spot and take measures to take risks. Therefore, in addition to using the three rate method to determine the index, we can also analyze the statistical law of the critical degree of the index to judge the sensitivity of the index.<br>
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